Note 9 - Goodwill (Details Textual) - USD ($)	9 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jun. 30, 2018
Goodwill, Ending Balance	$ 915,790		$ 915,790	$ 915,790
Goodwill, Impairment Loss	$ 0	$ 0

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration